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1. Egg and chick fates of common terns in areas of high and low nest density

Author:
Barbour, David L.; Moore, David J.,   et al.   ; Morris, Ralph D.;     Show all 3 Author
Source:
Journal of field ornithology 2000 v.71 no.1 pp. 34-45
ISSN:
0273-8570
Subject:
basins; nests; eggs; predators; chicks; predation; Arenaria interpres; nesting; Nycticorax nycticorax; Sterna hirundo
Abstract:
... Common Tern (Sterna hirundo) nests were both clumped (high density) and solitary (low density) at Windermere Basin, Lake Ontario in 1992. Our objective was to measure egg fate and chick survival up to 14–16 d of pairs nesting in these two dispersion patterns. We first measured the distance to nearest neighbor for 100 randomly selected clutches, and defined low-density nests as those at a distance ...
DOI:
10.1648/0273-8570(2000)071[0034:EACFOC]2.0.CO;2

2. Grassland songbird abundance along roads and trails in southern saskatchewan

Author:
Duncan, David C.,   et al.   ; Sutter, Glenn C.; Davis, Stephen K.;     Show all 3 Authors
Source:
Journal of field ornithology 2000 v.71 no.1 pp. 110-116
ISSN:
0273-8570
Subject:
grasslands; roads; songbirds; Passeriformes; habitats; Saskatchewan
Abstract:
... We conducted roadside and trail-side point count surveys to determine whether grassland bird abundance differs along ditched and non-ditched sampling points in southwestern Saskatchewan. Savannah and Vesper Sparrows were more abundant along roads, while Baird's Sparrows, Chestnut-collared Longspurs, and Sprague's Pipits were more abundant along trails. Clay-colored Sparrows, Horned Larks, and West ...
DOI:
10.1648/0273-8570(2000)071[0110:GSAARA]2.0.CO;2

3. Alternate drumming site use by ruffed grouse in central pennsylvania

Author:
Klute, David S.,   et al.   ; Lovallo, Matthew J.; Storm, Gerald L.; Tzilkowski, Walter M.;     Show all 4 Authors
Source:
Journal of field ornithology 2000 v.71 no.3 pp. 506-515
ISSN:
0273-8570
Subject:
Bonasa umbellus; climate; forests; geomorphology; males; surveys; wind; Pennsylvania
Abstract:
... We report on the use of alternate drumming sites by male Ruffed Grouse (Bonasa umbellus) during 1976–1997 within activity centers in a managed and an unmanaged forest in central Pennsylvania. Density of drumming males ranged from 1.6–12.5 males/km² in the managed forest and from 1.7–7.6 males/km² in the unmanaged forest. The proportion of males that used alternate drumming sites within activity ce ...
DOI:
10.1648/0273-8570(2000)071[0506:ADSUBR]2.0.CO;2

4. Breeding ecology and management of snowy plovers in north-central oklahoma

Author:
Leslie, David M.,   et al.   ; Winton, Bryan R.; Rupert, Jeffery R.;     Show all 3 Authors
Source:
Journal of field ornithology 2000 v.71 no.4 pp. 573-584
ISSN:
0273-8570
Subject:
Canidae; Charadrius alexandrinus; Laridae; breeding; microhabitats; nesting; nests; predation; predators; Oklahoma
Abstract:
... Snowy Plover (Charadrius alexandrinus) nests (n = 415) were monitored to completion on an expansive alkaline flat in north-central Oklahoma in 1995–1996. We reported Mayfield Method nesting success but relied on apparent nesting success to compare differences in successful (hatched) and lost (depredated/flooded) nests in five 1000-ha areas, by microhabitat type, and inside versus outside electric- ...
DOI:
10.1648/0273-8570(2000)071[0573:BEAMOS]2.0.CO;2

5. Distribution of wintering shorebirds in coastal florida

Author:
Cobb, David T.,   et al.   ; Sprandel, Gary L.; Gore, Jeffrey A.;     Show all 3 Authors
Source:
Journal of field ornithology 2000 v.71 no.4 pp. 708-720
ISSN:
0273-8570
Subject:
Calidris; Charadrius melodus; coasts; surveys; wintering grounds; Florida
Abstract:
... We used aerial surveys and reports from experienced birders and biologists to identify potentially important sites for wintering shorebirds in coastal Florida. We visited 273 sites in November and December 1993 to assess use by shorebirds and, based on abundance and number of species, we selected the 60 most important sites. We visited these 60 sites at least 3 times between 16 Dec. 1993 and 1 Mar ...
DOI:
10.1648/0273-8570(2000)071[0708:DOWSIC]2.0.CO;2

6. Relationship between nest success and concealment in two ground-nesting passerines

Author:
Flaspohler, David J.,   et al.   ; Temple, Stanley A.; Rosenfield, Robert N.;     Show all 3 Authors
Source:
Journal of field ornithology 2000 v.71 no.4 pp. 736-747
ISSN:
0273-8570
Subject:
Lycopodium; Turdidae; forests; nesting; nesting sites; nests; summer; sympatry; Michigan; Wisconsin
Abstract:
... We examined vegetation characteristics around nest sites of the Hermit Thrush (Catharus guttatus) and Ovenbird (Seiurus aurocapillus) for three summers in the northern-and mixed-hardwood forests of northern Wisconsin and the Upper Peninsula of Michigan to test the hypothesis that nests with greater concealment are less vulnerable to depredation. Because these two ground-nesting passerines differ i ...
DOI:
10.1648/0273-8570(2000)071[0736:RBNSAC]2.0.CO;2

7. Day and night feeding habitat of red knots in patagonia: profitability versus safety?

Author:
Price, David J.,   et al.   ; Sitters, Humphrey P.; González, Patricia M.; Piersma, Theunis; Baker, Allan J.;     Show all 5 Authors
Source:
Journal of field ornithology 2001 v.72 no.1 pp. 86-95
ISSN:
0273-8570
Subject:
Calidris canutus; birds; flocks; habitats; mussels; predators; profitability; stopover sites; Argentina
Abstract:
... By radio-tracking and recording the movements of flocks, the distribution of feeding Red Knots (Calidris canutus rufa) was studied day and night at a migration stopover site near San Antonio Oeste, Río Negro, Argentina in March and April 1998. By day, the birds fed in dense flocks of 500–4000 on an area of restinga or rock platform where there were beds of the small mussel Brachidontes rodriguezi. ...
DOI:
10.1648/0273-8570(2001)072[0086:DANFHO]2.0.CO;2

8. Landbirds on offshore islands in samoa

Author:
Steadman, David W.,   et al.   ; Freifeld, Holly B.; Sailer, Jeffrey K.;     Show all 3 Authors
Source:
Journal of field ornithology 2001 v.72 no.1 pp. 72-85
ISSN:
0273-8570
Subject:
chickens; forests; habitat destruction; habitats; human population; indigenous species; introduced species; islands; pigeons; species diversity; Samoa
Abstract:
... We surveyed birds on seven small (<3 km²) offshore islands in the Independent State of Samoa to investigate the distribution and abundance of landbirds relative to abiotic and biotic features of these islands. We recorded 17 of the 28 indigenous species of landbirds that reside in Independent Samoa. Species richness among the islands ranged from 3 to 12 species. Other than the domestic chicken, no ...
DOI:
10.1648/0273-8570(2001)072[0072:LOOIIS]2.0.CO;2

9. Using point counts to establish conservation priorities: how many visits are optimal?

Author:
Desante, David F.,   et al.   ; Siegel, Rodney B.; Philip Nott, M.;     Show all 3 Authors
Source:
Journal of field ornithology 2001 v.72 no.2 pp. 228-235
ISSN:
0273-8570
Subject:
birds; breeding season; species diversity; Northwestern United States
Abstract:
... We conducted point counts three times during the 1994 breeding season at 48 stations across the northwestern United States, and used cumulative totals from the three visits to rank the sites by two potential indices of conservation value: species richness and overall abundance of birds. We then recalculated each of the indices (1) using data from only a single visit to each site and (2) using data ...
DOI:
10.1648/0273-8570(2001)072[0228:UPCTEC]2.0.CO;2

10. Revisit schedule does not affect results of point counts

Author:
Lowe, David E.,   et al.   ; Brooks, Marshall A.; Harrigan, Brenna C.; Johnson, Karen M.; Lowery, Justin P.; McGlothlin, Joel W.; Sasso, Michelle M.; Smith, Sarah A.; Cristol, Daniel A.;     Show all 9 Authors
Source:
Journal of field ornithology 2001 v.72 no.3 pp. 404-411
ISSN:
0273-8570
Subject:
Junco hyemalis; birds; breeding; landscapes; males; Appalachian region; Virginia
Abstract:
... We compared two fixed-radius point count sampling regimes using two abundant breeding species, the Dark-eyed Junco (Junco hyemalis) and the Chestnut-sided Warbler (Dendroica pensylvanica), in a forested landscape in the southern Appalachian mountains of Virginia. The same 20 points were counted three times under each of two revisiting schedules, either hourly or weekly, and the maximum and mean nu ...
DOI:
10.1648/0273-8570(2001)072[0404:RSDNAR]2.0.CO;2

11. Determination of age of nestling Prothonotary Warblers

Author:
Podlesak, David W.,   et al.   ; Blem, Charles R.;     Show all 2 Author
Source:
Journal of field ornithology 2002 v.73 no.1 pp. 33-37
ISSN:
0273-8570
Subject:
age determination; birds; breeding season; growth and development; nestlings; nests; plumage; reproductive performance
Abstract:
... The ability to accurately determine age of nestlings is useful in studies of reproductive performance of small birds. Because of a resurgence of interest in nest-box studies of reproductive performance of Prothonotary Warblers (Protonotaria citrea), we closely monitored the growth and development of 766 nestlings from 190 nests over the 1999 and 2000 breeding seasons. Distinguishing characteristic ...
DOI:
10.1648/0273-8570(2002)073[0033:DOAONP]2.0.CO;2

12. Factors influencing nest-site selection by Spanish Imperial Eagles

Author:
Bird, David M.,   et al.   ; Bisson, Isabelle A.; Ferrer, Miguel;     Show all 3 Authors
Source:
Journal of field ornithology 2002 v.73 no.3 pp. 298-302
ISSN:
0273-8570
Subject:
Aquila; birds of prey; eagles; endangered species; humans; land use; microhabitats; national parks; nesting sites; nests; regression analysis; trees; Spain
Abstract:
... We examined nest-site selection by Spanish Imperial Eagles (Aquila adalberti) in Doñana National Park (southwestern Spain) from 1984–1994. Spanish Imperial Eagles are large birds of prey that defend and occupy a territory year-round. Identifying a territory's nest-site characteristics represents a critical step in safeguarding this endangered species' habitat. We measured seven habitat variables d ...
DOI:
10.1648/0273-8570(2002)073[0298:FINSSB]2.0.CO;2

13. Priority research needs for the conservation of Neotropical migrant landbirds : The Partners in Flight Research Working Group

Author:
Bonter, David N.,   et al.   ; Donovan, Therese M.; Beardmore, Carol J.; Brawn, Jeffrey D.; Cooper, Robert J.; Fitzgerald, Jane A.; Ford, Robert; Gauthreaux, Sidney A.; George, T. Luke; Hunter, W. C.; Martin, Thomas E.; Price, Jeff; Rosenberg, Kenneth V.; Vickery, Peter D.; Wigley, T. Bently;     Show all 15 Authors
Source:
Journal of field ornithology 2002 v.73 no.4 pp. 329-339
ISSN:
0273-8570
Subject:
breeding; databases; funding; habitats; landscapes; managers; migratory behavior; prioritization; researchers; scientists; teachers; tropics; winter; United States
Abstract:
... Partners in Flight (PIF) is a consortium of professional and volunteer scientists and educators that promotes the conservation of landbird species. Central to the PIF conservation effort is the development of Bird Conservation Plans specific to each physiographic region of the United States. Without a coordinated prioritization of research needs, land managers, researchers, and funding agencies se ...
DOI:
10.1648/0273-8570(2002)073[0329:PRNFTC]2.0.CO;2

14. Molt patterns and age and sex determination of selected southeastern Cuban landbirds

Author:
DeSante, David F.,   et al.   ; Pyle, Peter; McAndrews, Amy; Veléz, Pilar; Wilkerson, Robert L.; Siegel, Rodney B.;     Show all 6 Authors
Source:
Journal of field ornithology 2004 v.75 no.2 pp. 136-145
ISSN:
0273-8570
Subject:
Passeriformes; age determination; birds; latitude; molting; sex determination; North America
Abstract:
... Data from a banding station at Guantanamo Bay and the examination of 830 specimens were used to study molt patterns and criteria for determination of age and sex in 15 resident species of Cuban landbirds. All 15 species undergo their prebasic molt in August to November, with a few species commencing as early as May and/or completing as late as December. This timing corresponded with that of relate ...
DOI:
10.1648/0273-8570(2004)075[0136:MPAAAS]2.0.CO;2

15. Differentiating nest sites of primary and secondary cavity-nesting birds in New Mexico

Author:
Arsenault, David P.
Source:
Journal of field ornithology 2004 v.75 no.3 pp. 257-265
ISSN:
0273-8570
Subject:
Melanerpes formicivorus; Otus; Pinus ponderosa; Quercus gambelii; Sialia; body size; forests; fruits; models; nesting; nesting sites; nests; regression analysis; snags; tree cavities; trees; woodpeckers; New Mexico
Abstract:
... I assessed nest-site characteristics of two cavity-excavating species, the Acorn Woodpecker (Melanerpes formicivorus) and Northern Flicker (Colaptes auratus), and two secondary cavity-nesting species, the Flammulated Owl (Otus flammeolus) and Western Bluebird (Sialia mexicana). These species were common in mixed coniferous-deciduous forests within my New Mexico study areas. I predicted that nests ...
DOI:
10.1648/0273-8570(2004)075[0257:DNSOPA]2.0.CO;2

16. Breeding between Tree Swallows from the same brood

Author:
Hussell, David J. T.,   et al.   ; Shutler, Dave; Horn, Andrew G.; Leonard, Marty L.; Shutler, Robert W.; Lepage, Denis;     Show all 6 Authors
Source:
Journal of field ornithology 2004 v.75 no.4 pp. 353-358
ISSN:
0273-8570
Subject:
Hirundinidae; demographic statistics; genes; inbreeding; nests; rearing; Nova Scotia; Ontario
Abstract:
... We provide data on three instances where Tree Swallows (Tachycineta bicolor) that fledged from the same nest (broodmates) eventually bred together in subsequent years. Two instances were detected in Ontario and a third was detected in Nova Scotia. Based on demographics at the times of each event, we estimated probabilities of these broodmate pairings as approximately 1 in 16,000, 1 in 5600, and 1 ...
DOI:
10.1648/0273-8570(2004)075[0353:BBTSFT]2.0.CO;2

17. Passage of arthropod-diagnostic fragments in Northern Bobwhite chicks

Author:
Butler, David A.,   et al.   ; Palmer, William E.; Dowell, Simon D.;     Show all 3 Authors
Source:
Journal of field ornithology 2004 v.75 no.4 pp. 372-375
ISSN:
0273-8570
Subject:
Colinus virginianus; arthropods; brood rearing; chicks; digestive tract; food choices; foraging; game birds; gizzard; habitats; intestines
Abstract:
... Identifying the arthropods present in the digestive tracts of human-imprinted gamebird chicks after foraging may provide a more biologically relevant assessment of arthropod availability in brood-rearing habitats. It may also provide information on food selection by chicks. An assumption of this methodology is that diagnostic fragments of arthropods (i.e., those body fragments used to identify tax ...
DOI:
10.1648/0273-8570(2004)075[0372:POAFIN]2.0.CO;2

18. A method for color-marking birds at resting sites

Author:
Bird, David M.,   et al.   ; Donehower, Christina E.;     Show all 2 Author
Source:
Journal of field ornithology 2005 v.76 no.2 pp. 204-207
ISSN:
0273-8570
Subject:
Larus argentatus; birds; feathers; preening; walking
Abstract:
... A short-term color-marking technique suitable for non-breeding birds was developed by altering a common method used to mark incubating birds. A dye paste was spread on the ground at resting sites used by Herring (Larus argentatus) and Great Black-backed (L. marinus) gulls. Gulls first contacted dye by walking, standing, or sitting in the paste. When preening, birds transferred small amounts of dye ...
DOI:
10.1648/0273-8570(2005)076[0204:AMFCBA]2.0.CO;2

19. Use of radio-telemetry to reduce bias in nest searching

Author:
Krementz, David G.,   et al.   ; Powell, Larkin A.; Lang, Jason D.; Conroy, Michael J.;     Show all 4 Authors
Source:
Journal of field ornithology 2005 v.76 no.3 pp. 274-278
ISSN:
0273-8570
Subject:
Hylocichla mustelina; birds; conservation areas; habitats; hardwood forests; nesting; nests; piedmont; radio telemetry; soil; streams; survival rate; Georgia
Abstract:
... We used traditional searching, as well as radio-telemetry, to find 125 Wood Thrush (Hylocichla mustelina) nests during 1994–1996 at the Piedmont National Wildlife Refuge in Georgia, USA. We compared daily nest survival rates for 66 nests of radio-marked birds with 59 nests of birds found through systematic searching. By using radio-telemetry, we found Wood Thrush nests in higher elevation pine hab ...
DOI:
10.1648/0273-8570(2005)076[0274:UORTRB]2.0.CO;2

20. Breeding chronology of Marbled Murrelets varies between coastal and inshore sites in southern British Columbia

Author:
Lank, David B.,   et al.   ; Tranquilla, Laura McFarlane; Parker, Nadine R.; Bradley, Russell W.; Krebs, Elizabeth A.; Lougheed, Lynn; Lougheed, Cecilia;     Show all 7 Authors
Source:
Journal of field ornithology 2005 v.76 no.4 pp. 357-367
ISSN:
0273-8570
Subject:
census data; monitoring; nests; breeding; adults; forestry; latitude; coasts; nesting; radio telemetry; chicks; juveniles; British Columbia
Abstract:
... We used four methods to compare the breeding chronologies of Marbled Murrelet at two sites at similar latitudes in British Columbia: Desolation Sound on the mainland, inshore of the Strait of Georgia, and Clayoquot Sound on the west coast of Vancouver Island. At both sites, we estimated breeding chronologies from the timing of (1) nest initiation dates determined by radio-telemetry, (2) the chick ...
DOI:
10.1648/0273-8570(2005)076[0357:BCOMMV]2.0.CO;2

21. Egg color as an adaptation for thermoregulation

Author:
Westmoreland, David,   et al.   ; Schmitz, Matthew; Burns, Kevin E.;     Show all 3 Authors
Source:
Journal of field ornithology 2007 v.78 no.2 pp. 176-183
ISSN:
0273-8570
Subject:
Agelaius phoeniceus; absorbance; birds; color; egg shell; eggs; fever; habitats; heat; nests; pigmentation; pigments; solar radiation; thermoregulation
Abstract:
... Avian embryos are incubated at temperatures only 2-6 °C below that at which hyperthermia begins to influence survival. In habitats where sunlight directly strikes the eggs, even for short periods, heat gain may be a substantial threat to survival, and reflective pigmentation may reduce the rate of heat gain. The results of previous studies suggest that light-colored eggs acquire heat slower than d ...
DOI:
10.1111/j.1557-9263.2007.00101.x

22. Latitudinal variation in population structure of wintering Pacific Black Brant

Author:
Ward, David H.,   et al.   ; Schamber, Jason L.; Sedinger, James S.; Hagmeier, Kate R.;     Show all 4 Authors
Source:
Journal of field ornithology 2007 v.78 no.1 pp. 74-82
ISSN:
0273-8570
Subject:
Branta bernicla; adults; age structure; environmental factors; geese; juveniles; migratory birds; population dynamics; sex ratio; waterfowl; winter; wintering grounds; Alaska; British Columbia; Mexico
Abstract:
... Latitudinal variation in population structure during the winter has been reported in many migratory birds, but has been documented in few species of waterfowl. Variation in environmental and social conditions at wintering sites can potentially influence the population dynamics of differential migrants. We examined latitudinal variation in sex and age classes of wintering Pacific Black Brant (Brant ...
DOI:
10.1111/j.1557-9263.2006.00087.x

23. A comparison of three noise reduction procedures applied to bird vocal signals

Author:
Logue, David M.,   et al.   ; Baker, Myron C.;     Show all 2 Author
Source:
Journal of field ornithology 2007 v.78 no.3 pp. 240-253
ISSN:
0273-8570
Subject:
acoustic properties; birds; habitats; vocalization
Abstract:
... Recordings of avian vocal signals in natural habitats include ambient noise. Often this background noise corrupts across all frequencies and is of substantial amplitude. Reducing this ambient noise to prepare vocal signals for playback stimuli or to remove habitat-specific noise signatures prior to analyzing a signal's acoustic characteristics can be useful. We conducted experimental evaluations o ...
DOI:
10.1111/j.1557-9263.2007.00109.x

24. Dispersal distances of Tree Swallows estimated from continent-wide and limited-area data

Author:
Winkler, David W.,   et al.   ; Hosner, Peter A.;     Show all 2 Author
Source:
Journal of field ornithology 2007 v.78 no.3 pp. 290-297
ISSN:
0273-8570
Subject:
Tachycineta bicolor; birds; data collection; dispersal behavior; mortality; volunteers; New York
Abstract:
... Dispersal is a critical link between organismal and population biology, yet, because of their mobility, our understanding of the causes and consequences of long-distance dispersal by birds remains poorly known. Methods used to study dispersal include (1) marking and recapturing individuals in a limited study area to estimate survival and dispersal rates, and (2) relying on volunteers to mark and r ...
DOI:
10.1111/j.1557-9263.2007.00117.x

25. Using net sacks to examine the relationship between egg size and young size in Common Pochards

Author:
Hořák, David,   et al.   ; Albrecht, Tomáš;     Show all 2 Author
Source:
Journal of field ornithology 2007 v.78 no.3 pp. 334-339
ISSN:
0273-8570
Subject:
Aythya; bags; breeding; ducklings; eggs; energy; hatching; methodology; nests; predators; risk; waterfowl
Abstract:
... Investigators studying the relationship between egg size and young size often face difficulties in assigning particular young to particular eggs. We present a new method based on the use of separate net sacks for each egg that allowed us to study this phenomenon in Common Pochards (Aythya ferina) without excessive disturbance of breeding birds. We found a positive isometric relationship between du ...
DOI:
10.1111/j.1557-9263.2007.00116.x

26. Nocturnal nest predation: a potential obstacle to recovery of a Florida Scrub-Jay population

Author:
Breininger, David R.,   et al.   ; Carter, Geoffrey M.; Legare, Mike L.; Oddy, Donna M.;     Show all 4 Authors
Source:
Journal of field ornithology 2007 v.78 no.4 pp. 390-394
ISSN:
0273-8570
Subject:
Aphelocoma coerulescens; Elaphe obsoleta; antipredatory behavior; birds; eggs; females; habitat conservation; habitats; landscapes; nesting; nests; population dynamics; predation; predators; risk; snakes; video cameras
Abstract:
... Population declines among birds are often linked to habitat change and associated increases in nest predation rates. In species of conservation concern identifying nest predators is an important first step in developing management strategies to mitigate low nesting success caused by depredation. Because predator composition varies geographically and with landscape factors habitat restoration may n ...
DOI:
10.1111/j.1557-9263.2007.00127.x